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| author | Shaunak Saha <shaunak.saha@intel.com> | 2017-12-13 09:37:05 -0800 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2018-01-16 19:31:39 +0000 |
| commit | 7210ec0dcaca84957a5ebe9ea6e222d55a1431bb (patch) | |
| tree | 3ee30a36f71a825bc49e1fb4f7fef695d9a67fc3 /src/soc/intel/apollolake | |
| parent | 0a19b080ef03ba50d111bd966c45ca90cf1507d6 (diff) | |
| download | coreboot-7210ec0dcaca84957a5ebe9ea6e222d55a1431bb.tar.xz | |
soc/intel/apollolake: Set ACPI_FADT_LOW_PWR_IDLE_S0 for S0ix
This patch sets the ACPI FADT flag ACPI_FADT_LOW_PWR_IDLE_S0
if S0IX is enabled for the platform.
TEST= Boot to OS and check the ACPI_FADT_LOW_PWR_IDLE_S0 flag
is set in FACP table.
Change-Id: Ibb43d5c8024dcdf753416e4bd2a457991cc7a433
Signed-off-by: Shaunak Saha <shaunak.saha@intel.com>
Reviewed-on: https://review.coreboot.org/23095
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'src/soc/intel/apollolake')
| -rw-r--r-- | src/soc/intel/apollolake/acpi.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/acpi.c b/src/soc/intel/apollolake/acpi.c index 1449a36619..5e42091965 100644 --- a/src/soc/intel/apollolake/acpi.c +++ b/src/soc/intel/apollolake/acpi.c @@ -153,6 +153,9 @@ int soc_madt_sci_irq_polarity(int sci) void soc_fill_fadt(acpi_fadt_t *fadt) { + const struct soc_intel_apollolake_config *cfg; + struct device *dev = SA_DEV_ROOT; + fadt->pm_tmr_blk = ACPI_BASE_ADDRESS + PM1_TMR; fadt->p_lvl2_lat = ACPI_FADT_C2_NOT_SUPPORTED; @@ -166,6 +169,15 @@ void soc_fill_fadt(acpi_fadt_t *fadt) fadt->x_pm_tmr_blk.space_id = 1; fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8; fadt->x_pm_tmr_blk.addrl = ACPI_BASE_ADDRESS + PM1_TMR; + + if (!dev || !dev->chip_info) { + printk(BIOS_ERR, "BUG! Could not find SOC devicetree config\n"); + return; + } + cfg = dev->chip_info; + + if(cfg->lpss_s0ix_enable) + fadt->flags |= ACPI_FADT_LOW_PWR_IDLE_S0; } void soc_power_states_generation(int core_id, int cores_per_package) |